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dale30 Newcomer Location: Casino NSW Registered: August 2004	18R perforfance Sun, 13 November 2005 11:33 Hi Everyone My daughter races an XT130 speedway car with an 18R in it. Rules say stock motor with extractors and carby rejetting. I think we have an early 18R but not sure. It has spring tensioner that screws in from the outside of the head on top timing chain, not the internal tensioner that sits between the chain. Is the 18RC a better thing to start with. What makes the RC lower in comprwssion. Is there a mixture of bits from both motors that will help with a few more horsepower. My manual says that the 18R is 113HP and the 18RC 97HP. Is this because of lower comp or valve timing for smog control.. Any help would be great. [Report message to a moderator]

	Subject	Poster	Date
	18R perforfance	dale30	Sun, 13 November 2005 11:33
	Re: 18R perforfance	crostek	Sun, 13 November 2005 12:14
	Re: 18R perforfance	dale30	Sun, 13 November 2005 12:31
	Re: 18R perforfance	thechuckster	Sun, 13 November 2005 13:25
	Re: 18R perforfance	dale30	Sun, 13 November 2005 13:43
	Re: 18R perforfance	Mr DOHC	Mon, 14 November 2005 06:56
	Re: 18R perforfance	dingaling	Mon, 14 November 2005 08:50
	Re: 18R perforfance	jeffro RA28	Tue, 15 November 2005 09:18
	Re: 18R perforfance	thechuckster	Mon, 14 November 2005 09:37
	Re: 18R perforfance	dale30	Tue, 15 November 2005 08:55
	Re: 18R perforfance	thechuckster	Tue, 15 November 2005 10:21
	Re: 18R perforfance	o_man_ra23	Wed, 16 November 2005 06:12

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